.page-disclaimer{
  --u-sticky:calc(var(--top-h) + 1.5rem);
  --u-soft:#33403e;
  background:var(--paper);
  color:var(--ink);
}

.page-disclaimer .breadcrumb{
  padding-top:1.25rem;
  font-size:.8125rem;
}

/* 首屏：横向轨道收束 */
.page-disclaimer .usage-hero{
  position:relative;
  overflow:hidden;
  padding:2.25rem 0 2.5rem;
  border-bottom:1px solid var(--grey);
  background:linear-gradient(180deg,rgba(12,74,78,.07),rgba(12,74,78,0) 62%);
}
.page-disclaimer .usage-hero::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:8px;
  background:repeating-linear-gradient(90deg,var(--teal) 0 22px,transparent 22px 30px);
  opacity:.55;
}
.page-disclaimer .usage-hero::after{
  content:"";
  position:absolute;
  right:-14%;
  bottom:-52%;
  width:58%;
  aspect-ratio:1;
  border:1px solid var(--grey);
  transform:rotate(-12deg);
  pointer-events:none;
}
.page-disclaimer .usage-hero__inner{
  position:relative;
  display:grid;
  gap:1.75rem;
}
.page-disclaimer .usage-hero h1{
  font-family:var(--ff-display);
  font-weight:700;
  font-size:clamp(2rem,7.4vw,4.25rem);
  line-height:1;
  letter-spacing:.005em;
  margin:.5rem 0 0;
  text-wrap:balance;
}
.page-disclaimer .usage-hero__lead{
  margin:.9rem 0 1.25rem;
  max-width:44rem;
  font-size:1.0313rem;
  line-height:1.78;
  color:var(--u-soft);
}
.page-disclaimer .usage-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin:0;
  padding:0;
  list-style:none;
}
.page-disclaimer .usage-hero__meta .tag{
  border-radius:0;
  border:1px solid var(--grey);
  background:var(--white);
  color:var(--teal);
  font-family:var(--ff-mono);
  font-size:.75rem;
  letter-spacing:.03em;
  padding:.35rem .6rem;
}
.page-disclaimer .usage-hero__figure{
  margin:0;
  background:var(--ink);
  border:1px solid var(--ink);
  padding:.5rem;
}
.page-disclaimer .usage-hero__figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}
.page-disclaimer .usage-hero__figure figcaption{
  padding:.6rem .25rem .2rem;
  font-family:var(--ff-mono);
  font-size:.72rem;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--mist);
}

/* 主体：目录 + 条款 */
.page-disclaimer .usage-layout{
  display:grid;
  gap:1.75rem;
  padding-block:2rem 3rem;
}
.page-disclaimer .usage-toc{
  border:1px solid var(--grey);
  background:var(--white);
  padding:1.1rem 1rem 1.15rem;
}
.page-disclaimer .usage-toc__title{
  margin:0 0 .75rem;
  padding-bottom:.6rem;
  border-bottom:1px solid var(--ink);
  font-family:var(--ff-serif);
  font-size:1rem;
  font-weight:700;
  letter-spacing:.1em;
}
.page-disclaimer .usage-toc__list{
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:.1rem;
}
.page-disclaimer .usage-toc__list a{
  display:grid;
  grid-template-columns:2rem minmax(0,1fr);
  gap:.5rem;
  align-items:baseline;
  padding:.5rem .3rem;
  color:var(--ink);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-disclaimer .usage-toc__list a:hover,
.page-disclaimer .usage-toc__list a:focus-visible{
  background:var(--mist);
  border-left-color:var(--orange);
}
.page-disclaimer .usage-toc__no{
  font-family:var(--ff-mono);
  font-size:.75rem;
  color:var(--lake);
  letter-spacing:.05em;
}
.page-disclaimer .usage-toc__note{
  margin:.9rem 0 0;
  padding-top:.75rem;
  border-top:1px solid var(--grey);
  font-size:.8125rem;
  line-height:1.65;
  color:var(--u-soft);
}

.page-disclaimer .clause{
  padding:1.75rem 0 2rem;
  border-top:1px solid var(--grey);
  scroll-margin-top:calc(var(--top-h) + 1rem);
}
.page-disclaimer .clause:first-of-type{
  border-top:0;
  padding-top:0;
}
.page-disclaimer .clause__head{
  display:flex;
  gap:.8rem;
  align-items:baseline;
  margin-bottom:.4rem;
}
.page-disclaimer .clause__no{
  flex:none;
  font-family:var(--ff-mono);
  font-size:.8125rem;
  line-height:1.3;
  padding:.15rem .45rem;
  border:1px solid var(--orange-deep);
  color:var(--orange-deep);
}
.page-disclaimer .clause__title{
  margin:0;
  font-family:var(--ff-serif);
  font-size:clamp(1.3rem,4.8vw,1.75rem);
  line-height:1.32;
  font-weight:700;
}
.page-disclaimer .clause__intro{
  margin:.7rem 0 1.1rem;
  font-size:1rem;
  line-height:1.78;
  color:var(--u-soft);
}

.page-disclaimer .clause-list{
  margin:0;
  padding:0;
  list-style:none;
  border-top:1px solid var(--grey);
}
.page-disclaimer .clause-list > li{
  display:grid;
  grid-template-columns:2.5rem minmax(0,1fr);
  gap:.7rem;
  padding:.85rem .3rem .85rem 0;
  border-bottom:1px solid var(--grey);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.page-disclaimer .clause-list > li:hover{
  background:rgba(220,235,237,.42);
  box-shadow:inset 2px 0 0 var(--orange);
}
.page-disclaimer .clause-list__no{
  font-family:var(--ff-mono);
  font-size:.8125rem;
  line-height:1.6;
  color:var(--gold);
  letter-spacing:.04em;
  padding-top:.15rem;
}
.page-disclaimer .clause-list__body{
  margin:0;
  font-size:.9688rem;
  line-height:1.78;
}
.page-disclaimer .clause-list__body strong{
  color:var(--teal);
  font-weight:700;
}
.page-disclaimer .clause-list__body a{
  color:var(--lake);
  text-decoration:underline;
  text-underline-offset:3px;
}

/* 设备提示 */
.page-disclaimer .compat{
  margin:1.25rem 0 .5rem;
  padding:1.1rem 1.05rem 1.25rem;
  background:var(--mist);
  border-left:4px solid var(--lake);
}
.page-disclaimer .compat__title{
  margin:0 0 .7rem;
  font-family:var(--ff-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--lake);
}
.page-disclaimer .compat__list{
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:.6rem;
  font-size:.9375rem;
  line-height:1.72;
  color:var(--ink);
}
.page-disclaimer .compat__list li{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.5rem;
}
.page-disclaimer .compat__list li::before{
  content:"—";
  font-family:var(--ff-mono);
  color:var(--lake);
}

/* 折叠补充 */
.page-disclaimer .accordion{
  margin-top:1rem;
  border-top:1px solid var(--grey);
}
.page-disclaimer .accordion__item{
  border-bottom:1px solid var(--grey);
}
.page-disclaimer .accordion__trigger{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
  padding:.85rem .3rem;
  background:transparent;
  border:0;
  text-align:left;
  font-family:var(--ff-body);
  font-size:.9375rem;
  font-weight:600;
  line-height:1.6;
  color:var(--teal);
  cursor:pointer;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.page-disclaimer .accordion__trigger:hover,
.page-disclaimer .accordion__trigger:focus-visible{
  color:var(--orange-deep);
  background:rgba(220,235,237,.4);
}
.page-disclaimer .accordion__sign{
  flex:none;
  position:relative;
  width:1.05rem;
  height:1.05rem;
  border:1px solid currentColor;
}
.page-disclaimer .accordion__sign::before{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:.6rem;
  height:1px;
  background:currentColor;
  transform:translate(-50%,-50%);
}
.page-disclaimer .accordion__sign::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:1px;
  height:.6rem;
  background:currentColor;
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.page-disclaimer .accordion__trigger[aria-expanded="true"] .accordion__sign::after{
  transform:translate(-50%,-50%) scaleY(0);
  opacity:0;
}
.page-disclaimer .accordion__panel p{
  margin:0 0 .85rem;
  padding:0 .3rem;
  font-size:.9375rem;
  line-height:1.78;
  color:var(--u-soft);
}

/* 联系与备案 */
.page-disclaimer .usage-contact{
  margin-top:1.75rem;
  padding:1.5rem 1.15rem 1.75rem;
  background:var(--ink);
  border-top:6px solid var(--orange);
  border-bottom:0;
  color:var(--white);
}
.page-disclaimer .usage-contact .clause__no{
  border-color:var(--orange);
  color:var(--orange);
}
.page-disclaimer .usage-contact .clause__title{
  color:var(--white);
}
.page-disclaimer .usage-contact .clause__intro{
  color:var(--mist);
}
.page-disclaimer .contact-grid{
  margin:1.1rem 0 0;
  border-top:1px solid rgba(255,253,248,.22);
}
.page-disclaimer .contact-row{
  display:grid;
  grid-template-columns:5.5rem minmax(0,1fr);
  gap:.75rem;
  align-items:baseline;
  padding:.7rem 0;
  border-bottom:1px solid rgba(255,253,248,.22);
}
.page-disclaimer .contact-row dt{
  font-family:var(--ff-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--mist);
}
.page-disclaimer .contact-row dd{
  margin:0;
  font-family:var(--ff-mono);
  font-size:.9375rem;
  line-height:1.65;
  color:var(--white);
  word-break:break-word;
}
.page-disclaimer .usage-contact__note{
  margin:.95rem 0 0;
  font-size:.875rem;
  line-height:1.75;
  color:var(--mist);
}
.page-disclaimer .usage-contact__note a{
  color:var(--white);
  text-decoration:underline;
  text-underline-offset:3px;
}

@media (min-width:720px){
  .page-disclaimer .usage-hero{
    padding:3rem 0 3.25rem;
  }
  .page-disclaimer .usage-hero__inner{
    gap:2rem;
  }
  .page-disclaimer .usage-layout{
    padding-block:3rem 4rem;
    gap:2.25rem;
  }
  .page-disclaimer .usage-toc__list a{
    padding:.55rem .4rem;
  }
  .page-disclaimer .contact-row{
    grid-template-columns:7rem minmax(0,1fr);
  }
  .page-disclaimer .usage-contact{
    padding:2rem 1.75rem 2.25rem;
  }
  .page-disclaimer .clause-list > li{
    grid-template-columns:3rem minmax(0,1fr);
    gap:.9rem;
  }
}

@media (min-width:1000px){
  .page-disclaimer .usage-hero__inner{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    gap:3rem;
    align-items:end;
  }
  .page-disclaimer .usage-hero__figure{
    padding:.6rem;
  }
  .page-disclaimer .usage-layout{
    grid-template-columns:15.5rem minmax(0,1fr);
    gap:3.5rem;
    align-items:start;
  }
  .page-disclaimer .usage-toc{
    position:sticky;
    top:var(--u-sticky);
  }
  .page-disclaimer .clause-list__body{
    font-size:1rem;
  }
}
</main>